﻿#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main()
{
	int age = 0;
	scanf("%d", &age);
	if (age < 0)
		printf("输入错误\n");

	else if (age < 18)
		printf("少年\n");
	else if (age <= 44)
		printf("⻘年\n");
	else if (age <= 59)
		printf("中⽼年\n");
	else if (age <= 89)
		printf("⽼年\n");
	else
		printf("⽼寿星\n");
	return 0;



}